The invention relates to a centrifugal coating type PP decorative film for a coated substrate surface. The centrifugal coating type PP decorative film is prepared by decorating the outer surface of aPP film with a functional coating in a centrifugal coating manner. Preparation of coating slurry for the functional coating comprises the following steps: adding coating glue, silane, a transition metal complex and a cross-linking agent into a slurrying tank; carrying out uniform mixing under stirring; then adjusting a pH value to 8 to 9 by using ammonia water; and then carrying out standing for 2to 4 h. The obtained coating slurry is applied on the outer surface of the PP film in the centrifugal coating manner; then drying in an environment with a temperature of 80 DEG C is carried out for 0.5 h; then curing in an environment with a temperature of 110 to 140 DEG C is carried out for 1 to 1.5 h; and finally, balancing under natural conditions is implemented for no less than 8 h. Through the protection of the centrifugal coating, the surface texture and functional strength of the PP decorative film are improved, and the PP decorative film can better fit with the coated substrate surface, thereby improving decoration effect.